From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [6237] Add vs{l,r} instructions
Date: Thu, 08 Jan 2009 18:54:49 +0000 [thread overview]
Message-ID: <E1LL01p-0004Z6-3U@cvs.savannah.gnu.org> (raw)
Revision: 6237
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6237
Author: aurel32
Date: 2009-01-08 18:54:48 +0000 (Thu, 08 Jan 2009)
Log Message:
-----------
Add vs{l,r} instructions
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/target-ppc/helper.h
trunk/target-ppc/op_helper.c
trunk/target-ppc/translate.c
Modified: trunk/target-ppc/helper.h
===================================================================
--- trunk/target-ppc/helper.h 2009-01-08 18:54:38 UTC (rev 6236)
+++ trunk/target-ppc/helper.h 2009-01-08 18:54:48 UTC (rev 6237)
@@ -173,6 +173,8 @@
DEF_HELPER_3(vrlb, void, avr, avr, avr)
DEF_HELPER_3(vrlh, void, avr, avr, avr)
DEF_HELPER_3(vrlw, void, avr, avr, avr)
+DEF_HELPER_3(vsl, void, avr, avr, avr)
+DEF_HELPER_3(vsr, void, avr, avr, avr)
DEF_HELPER_4(vsldoi, void, avr, avr, avr, i32)
DEF_HELPER_3(vspltb, void, avr, avr, i32)
DEF_HELPER_3(vsplth, void, avr, avr, i32)
Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c 2009-01-08 18:54:38 UTC (rev 6236)
+++ trunk/target-ppc/op_helper.c 2009-01-08 18:54:48 UTC (rev 6237)
@@ -2452,6 +2452,45 @@
r->u64[1] = (a->u64[1] & ~c->u64[1]) | (b->u64[1] & c->u64[1]);
}
+#if defined(WORDS_BIGENDIAN)
+#define LEFT 0
+#define RIGHT 1
+#else
+#define LEFT 1
+#define RIGHT 0
+#endif
+/* The specification says that the results are undefined if all of the
+ * shift counts are not identical. We check to make sure that they are
+ * to conform to what real hardware appears to do. */
+#define VSHIFT(suffix, leftp) \
+ void helper_vs##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
+ { \
+ int shift = b->u8[LO_IDX*0x15] & 0x7; \
+ int doit = 1; \
+ int i; \
+ for (i = 0; i < ARRAY_SIZE(r->u8); i++) { \
+ doit = doit && ((b->u8[i] & 0x7) == shift); \
+ } \
+ if (doit) { \
+ if (shift == 0) { \
+ *r = *a; \
+ } else if (leftp) { \
+ uint64_t carry = a->u64[LO_IDX] >> (64 - shift); \
+ r->u64[HI_IDX] = (a->u64[HI_IDX] << shift) | carry; \
+ r->u64[LO_IDX] = a->u64[LO_IDX] << shift; \
+ } else { \
+ uint64_t carry = a->u64[HI_IDX] << (64 - shift); \
+ r->u64[LO_IDX] = (a->u64[LO_IDX] >> shift) | carry; \
+ r->u64[HI_IDX] = a->u64[HI_IDX] >> shift; \
+ } \
+ } \
+ }
+VSHIFT(l, LEFT)
+VSHIFT(r, RIGHT)
+#undef VSHIFT
+#undef LEFT
+#undef RIGHT
+
#define VSL(suffix, element) \
void helper_vsl##suffix (ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \
{ \
Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c 2009-01-08 18:54:38 UTC (rev 6236)
+++ trunk/target-ppc/translate.c 2009-01-08 18:54:48 UTC (rev 6237)
@@ -6344,6 +6344,8 @@
GEN_VXFORM(vrlb, 2, 0);
GEN_VXFORM(vrlh, 2, 1);
GEN_VXFORM(vrlw, 2, 2);
+GEN_VXFORM(vsl, 2, 7);
+GEN_VXFORM(vsr, 2, 11);
GEN_VXFORM(vpkuhum, 7, 0);
GEN_VXFORM(vpkuwum, 7, 1);
GEN_VXFORM(vpkuhus, 7, 2);
reply other threads:[~2009-01-08 18:54 UTC|newest]
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